Phil's place is hard for the taxi drivers to find; that is, it's a small street, maybe they never heard of it.. Just tell them it's around the corner from Ratchabophit temple; and then phone to have Phil's manager meet you; or better yet just have the taxi driver call Phil.
Once you get there you will realize that you are in a GREAT district to find great street food, both breakfast and lunch/dinner. Just wander around not far from Phil's place and you'll see. The Grand Palace is within easy walking distance, and so is Wat Pho temple (which you can go see at night!)
To get around from Phil's place you can walk a short way to the Chang pier to catch the water taxis; which connect to the BTS = elevated railway = skytrain. Or you can hire cabs and sit in traffic, which in Bangkok is just legendary, the gridlock.
If you're still with me here, I want to tell you that Phil's place is quite unassuming in its location on an alley, but once you get in the door you'll realize that it's been remodeled and rehab'd and renovated to a pretty high standard. Everything works.